Thread guide



J. une,23, 1925.

.A. E... WHIPPLE THREAD GUIDE Filed March 19. I923 Patented June 1925.

.UNI'r D STATES PATENT OFFICE.

mos a WHIPPLE, or wnrrr'nsvxnm, massaonusm'rs, Assumes. TO wnrrm monnmwonxs, or WHITINSVILLE, mssacnusm'rs, A CORPORATION or mesa- CHUSETTS.

Taxman GUIDE. I

Application filed March 19, 1923. sermno. 826,010.

To all whom it may concern:

Be it known that I, AMos E. VVHIPPLE, United States citizen, residing inWhitinsville, Massachusetts, have invented the following describedImprovements in Thread Guides.

The invention relates to thread guides for wet twisters and likemachines, and its object is to provide an improved holder for thenon-corrodible or ceramic guide eyes, used in such machinery, whichadequately protects the guide eye from injury as by contact with bobbinsand which is least likely to catch or snarl the yarn and which iscapable of being made at small expense from sheet metal, and which mayalso be used on various standard types of linger heads or thread boardrails.

In the accompanying drawing Fig. 1 represents a partial perspective Viewof a thread board rail with finger heads having one form of theinvention applied to them. Fig. 2 is an enlarged perspective of thisform, Fig 3, a top plan thereof, Fig. 4 a longitudinal section of'Fig. 3on line IV-IV. Fig. 5 is a top plan of another and preferred form of theinvention, Fig. 6 a

' bottom plan thereof, Figs. 7 and 8, sections on line VIIVII andVIIIVIII respectively of Fig. 5, and Fig. 9, a longitudinal section ofFig.5.

The guide eye is formed with the usual yarn hole through which the yarnpasses and by which it is guided, and also with an oblique entrance slotthrough which the yarn may be laterally introduced into such hole. ThlSentrance slot may be variously formed but in the case taken forillustration, it is formed by the space between two opposing overlappingand relatively slender horns l, which makes an etficient form of guideeye. It will be understood that when the yarn has been laterally enteredinto the hole, through the oblique slot between the horns, it is thenvery surely confined in the hole against accidental escape. Suchguideeyes are commonly made of highly glazed ceramic or other vitreousmaterial like porcelain, andin the process 'of dofling and replacingbobbins, they are apt to be struck'from below as well as from above and,as heretofore mounted, they are very frequently broken,

or dislodged by such contact. According to the preferred form of thisinvention, such a ceramic guide eye. is shaped so that its smallercross-sectional dimension is at' its rear end, for example, it istapered toward the rear and it is also formed with a retaining recess orlockhole, such as indicated at 2, toward its rear end, this recess orhole being adapted to cooperate with a complementary retainin means orlook pin in too holder, as later described.

The holder is constituted at its forward end as a box which conforms ina eneral way to the tapered shape of the guide eye and surrounds andprotects it on its bottom as well as on its top and sides, but so as toleave the yarn hole and entrance slot exposed and accessible for theintroduction and passage of the yarn. That is to say, the box end of theholder is provided with an endwise recess 3 in its top wall and with acorresponding recess 4 in its bottom wall, both deep and wide enought toexpose the oblique entrance slot and yarn hole. Said recesses aredesirabl shaped or out as to form projections suc as 3 and 4 in eachrecess as shown in Figs. 5 and 6, respectively Such projections overlieand specially protect the two ,horns and they may obviously be extendedfurther over the horns than shown in the drawings, to provide greaterprotection than indicated. The walls of the eye box at its rear orsmaller end are integrally extended as a shank which may be either flat,channeled, round or other shape, as desired, so as to be adapted to bereceived in, and adjustably supported by, a finger head. In Figs. 1 to 4this rearward extension 6 is substantially fiat or channelshaped andalso slotted for adjustable attachment to the finger head 5 by the usualbolt, as indicated in Fig. 1. In Figs. 5 to 9' the integral extension 7of the guide box is round or cylindrical and adapted to be adjustablyheld in the cross bore of a rotary barrel 8 by a longitudinal set screw9. The barrel 8 is mounted to rotate in a slotted knuckle 10 mounted onthe thread board rail according to familiar design. The round shank 7enables the guide to be set in or out of the barrel and also turnedaxially, as will be understood. I

The box-form guide holder, in both forms of the invention, is preferablymade from a sheet metal blank of which the forward end is first slottedto form the recesses and horn-protecting projections above referred toand then folded to form the top, bottom and side walls of the box. I11Figs. 2 to 4 the rearwardly extended top and side Walls of the box partform a channelled shank. In Figs. 5 to 9 the rcarwardly extended top andside walls are rolled or folded to form a round or cylindrical shank andin order to guard against subsequent deformation, by the pressure of theset screw 9, the sheet metal may be rolled around a section of round rod11 serving as a reenforcing core therefor.

The guide eye may be fastened in the box by various means, but-itisdeemed best to pin it therein, for which purpose the top and bottom ofthe box walls are one or both perforated in registry with theperforation 2 in the rear smaller end of the guide eye. lVhen thesupporting box is folded of sheet metal, which as stated is preferred,it is expansible and the insertion therein of the guide eye slightlyspreads the walls so that when the retaining pin 12 has been engaged inhole 2, it holds the eye in a position where it is subject to theelastic pressure of the side walls, thus guarding against rattling byvibration. The pin 12, in the case in hand, preferably extends entirely.through the box, terminating flush with the lower wall or projectingslightly beyond it, in which case it is rounded or it may be upset. Inany case it can be removed so that the guide eyes when worn may bereplaced. It will be apparent that the specific form of theretaining-means is very obviously capable of considerable variation; itsessential function of course is to hold the eye against escape from thebox, and for this purpose it may be designed in several ways. The in 12is satisfactory because it is substantlally flush with the box Wall andleaves no opening likely to collect dirt. As a matter of appearance themeeting edges of the folded box walls are located at the bottom ofthebox and the rear end of the box part is tapered and smoothly merged intothe round extension shank 7 so that the whole of the exterior surface ofthe device is thus smooth and devoid of abruptshoulders or projectionslikely to catch on the yarn. It IS thus also more easily kept clean.

Claims:

1. Thread guide construction for wet twisters, etc., comprising aceramic guide eye, a supporting box therefor formed of sheet metalprotecting said eye on its top, sides and bottom, said box beingexternally smooth and havingan integral sheet metal extension forming ashank and a finger head provided with means for adjustably receiving andsupporting said shank.

2. Thread guide construction for wet twisters, etc., comprising aceramic guide eye having a yarn hole and an oblique e11- trance slot, asupporting box therefor recessed top and bottom to expose 'said hole andslot but elsewhere. protecting saideye, and an integral extension ofsaid. box forining a shank to be received in a finger head. 7 ,v

3. Thread guide construction for wet twisters, etc., com-prising aceramic guide eye having an oblique yarn entrance slot formed byoverlapping horns, a supporting box therefor recessed top and bottom toform projections protecting saidhorns and an integral shank extension ofsaid box adapted to be received in a finger head. i

4. Thread guide construction for wet twisters, etc., comprising aceramic guide eye having a retaining means or recess, a metal supportingbox for said eye having a retaining member engaging said retaining meanson the eye and an extension on the box adapted to be supported in afinger head.

5. Thread guide construction for wet twisters comprising a ceramic guideeye having its least cross-sectional dimension at its rear end, asupporting box therefor shaped to receive said eye, a retaining meansfor the eye and an integral extension. from the smaller end of said boxadapted to be received in a finger head.

6. Thread guide construction for wet twisters etc., comprising a ceramicguide eye perforated to receive a retaining) pin, a perforated sheetmetal supporting ox for said eye, a retaining pin occupying theperforations in said box and eye and an integral extension on the boxadapted to be su ported in a finger head.

Thread guide construction for wet twisters, etc., comprising a metalsupporting box formed with elastically yielding walls,a guide eyeadapted to spread said walls when 1 inserted in the box and means forretaining the eye in such wall-spreading position.

8. Thread guide construction for wet twisters, etc., comprising a guideeye and a holder therefor comprising a sheet metal blank folded at itsfront end to form a box covering and protecting said eye on its bottomand top, the rear of said blank being longitudinally bent or folded toform a shank adapted to be adjustably received in a finger head.

9. Thread guide construction for wet twisters, etc., comprising a guideeye and a holder therefor comprising a sheet metal blank folded at itsfront end to form a box protecting the bottom of said e e and at itsrear end to form a round shan adapted to be adjustably received in afinger head.

10. Thread guide construction for wet twisters, etc., comprising a guideeye and a sheet metal holder therefor having its rear end rolled arounda core and forming a supporting shank for said eye.

11. Thread guide construction for wet twisters, etc.,. comprising aguide eye, a supporting box therefor formed of a folded twisters, etc.,comprising a ceramic guide eye, a supporting box therefor formed of afolded sheet metal blank surrounding and protecting said eye on itsbottom, said box being externally smooth and tapered rearwardly into anintegral round sheet metal shank extension adapted to be supported in afinger head.

13. Thread guide construction comprising a tapered guide eye and aholder therefor formed of a sheet metal blank folded to form a taperedbox atv its front end and folded at its rear end to form a supportingshank for said eye.

14. Thread guide construction for wet twisters, etc., comprising aceramic guide eye having its least cross-sectional dimension at its rearend and perforated at such end, a tapered supporting box therefor,having a retaining pin for the perforation and an integral extensionfrom the smaller end of said box adapted to be received in a fingerhead.

15. A guide embodying a member having a longitudinally extended recessto receive an eye and a notch extended at right angles to the length ofsaid recess and communicating therewith.

16. A guide comprising a member having between the side walls thereof anopenended recess to receive removably an eye, and a notch extendedentirely through said side walls and intersecting said recess.

17 A guide comprising a member having between the side walls thereof anopenended recess and a notch extended entirely through said side wallsand intersecting specification.

' AMOS E. WHIPPLE.

said recess, and an eye removably mounted

